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OKLAHOMA - A dangerous manhunt is intensifying for a suspected killer who has dodged police before. Authorities in Oklahoma are searching for Michael Vance, and the suspect has been taunting police in Facebook videos, documenting his run from the law.

Vance's crime spree began Sunday night east of Oklahoma City. Detectives say he shot two police officer investigating a disturbance, and then he stole a patrol car to make his escape. The officers survived. Vance ditched the cop car and stole another car from a mobile home park, shooting witnesses. Police spotted the stolen car outside this home where they discovered the bodies of Vance's aunt and uncle, shot, stabbed, and showing signs the suspect tried to dismember them. Oklahoma police say a man matching Vance's description shot a clerk at a truck stop early Monday morning in west Oklahoma.

Police said Vance may have a medical condition, transmitted through blood, that he might try and spread. Detectives were tracking the suspect using his cell phone but Tuesday he went dark.